Regional Weather Roundup
Issued by NWS
Issued by NWS
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040
ASUS43 KLOT 180801
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 AM CDT MON AUG 18 2025
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-180900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 74 72 93 E9 30.00F TC 23
$$
ILZ003-004-008-010-011-017-018-180900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD TSTM 69 67 93 E9G23 30.04F TC 21
$$
ILZ005-006-012>014-019>023-180900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 73 70 90 E5 30.06S TC 23
CHICAGO-MIDWAY MOCLDY 76 70 82 E5 30.06R TC 24
AURORA PTCLDY 72 68 87 E6 30.06S TC 22
WAUKEGAN CLOUDY 75 71 87 E7 30.07S TC 24
DUPAGE AIRPORT PTCLDY 72 68 87 E5 30.06S TC 22
WHEELING MOCLDY 73 70 90 MISG 30.08R TC 23
MORRIS* MOCLDY 70 70 100 CALM 30.06R TC 21
LANSING* MOCLDY 72 71 95 E3 30.06S TC 22
NORTHERLY ISL* N/A 75 71 87 E7 N/A TC 24
$$
LMZ740>746-180900-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
S. MID LAKE BUOY 71 76 110/ 19/ 23 1018.8R
WINTHROP HARBOR 76 76 110/ 16/ 19 N/A 3/ 6
WAUKEGAN HARBOR 76 76 140/ 12/ 17 N/A 2/ 6
WILMETTE BUOY 76 110/ 12/ 17 1020.2F 3/ 5
NORTHERLY ISL 74 70/ 7/ 8 N/A
CALUMET HARBOR 75 50/ 5/ 7 1016.8F
BURNS HARBOR 74 120/ 9/ 13 1018.3F
MICHIGAN CITY 73 110/ 11/ 16 1016.4F
MICH CITY BUOY 74 78 110/ 16/ 21 1016.4F 3/ 6
ST. JOSEPH BUOY 72 78 70/ 19/ 25 1019.2F 3/ 6
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-180900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 75 72 90 SE6 29.99F TC 24
GALESBURG* PTCLDY 76 76 100 E3 30.02S FOG TC 25
MACOMB* MOCLDY 73 73 100 CALM 30.02S FOG TC 23
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-180900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 73 73 100 E5 30.05S TC 23
DECATUR MOCLDY 76 73 91 E3 30.04S TC 24
PEORIA PTCLDY 78 75 90 SE5 30.02S HX 81 TC 26
LACON* MOCLDY 71 69 92 E3 30.03S TC 22
LINCOLN* CLEAR 77 77 100 CALM 30.02S TC 25
SPRINGFIELD CLEAR 77 75 93 SE7 30.01F TC 25
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-180900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 74 73 97 E5 30.04F FOG TC 23
DANVILLE* PTCLDY 74 73 97 E3 30.06R TC 23
RANTOUL* CLEAR 74 73 98 E3 30.05S TC 23
MATTOON CLEAR 75 73 93 SE6 30.03S TC 24
$$
ILZ079-100>102-180900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 76 74 93 SW5 30.01S TC 25
BELLEVILLE CLEAR 78 75 90 CALM 29.99F HX 82 TC 26
CAHOKIA* CLEAR 77 75 93 CALM 30.00S TC 25
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 75 74 96 CALM 30.01S FOG TC 24
CAIRO* PTCLDY 77 76 96 CALM 30.01S TC 25
MARION CLEAR 74 73 95 CALM 30.02S TC 24
MT. VERNON PTCLDY 75 74 96 CALM 30.03S TC 24
CENTRALIA* CLEAR 74 73 96 E5 30.02F TC 23
SALEM* CLEAR 77 73 87 CALM 30.03S TC 25
METROPOLIS* CLEAR 74 73 96 CALM 30.02S TC 23
$$
ILZ067-068-072-073-078-083-087-091-180900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 75 74 96 CALM 30.03S TC 24
FLORA* PTCLDY 73 N/A N/A CALM 30.03S TC 23
FAIRFIELD* PTCLDY 73 71 93 CALM 30.03S TC 23
HARRISBURG* CLEAR 73 70 91 CALM 30.02S TC 23
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$